Dumping-car.



No. 755,207. PATBNTED MAR. 22, 1904.

.K. P. ASTROM.

DUMPING GAR;

APPLIOATION FILED SEPT. a, 1903.

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PATENTED MAR. 22, 1904.

K. P. ASTROM.

DUMPING GAR. APPLICATION FIELED SEPT. 3,.1903.

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10 MODEL.

"fill/11 Jill/b251 5 No. 755,207. PATENTED MAR. 22, 1904.

- K. P. ASTROM.

DUMPING GAR.

APPLICATION I'ILED SEPT. a, 1903. I

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. useful Dumping-Car,

UNITED STATES Patented Marci- 22, 1904.

PATENT OFFICE.

KARL P. ASTROM, OF NEWARK, NEW JERSEY, ASSIGNORTO M. TREAD- \VELL &COMPANY, OF NEW YORK, N. Y., A CORPORATION OF YORK.

DUMPING-CAR.

SPECIFICATION forming part of Letters Patent No. 755,207, dated March22, 1904.

4 Application filed September 3,1903. Serial No. 171,817. (No model.)

To all whom/it may concern.-

Be it known that I, KARL -P. As'rRoM, a subject of the King of Swedenand Norway, and a resident of Newark, in the county of Essex and Stateof New Jersey, have inventeda new and of whichthe following is aspecification.

My invention relates to a'dumping-car, and more particularly to a-car inwhich the body is tilted into dumping position and returned to itsnormal position by power other than manual.

The car which I have chosen to illustrate my invention is of that typewhich is used for dumping cinders; but'I do not'wish to limit myself tothis particular use, as it is obvious that the invention might well beapplied 'to dumping-cars utilized for other purposes than for dumpingcinders.

In the accompanying drawings, Figure 1 is a view of the car in endelevation, showing in full lines the body of the car in its uprightposition for receiving and carrying its loadand in dotted lines theposition which the body assumes when it is tilted in one direction intodumping position. Fig. 2 is a view' of the same in side elevationshowing a portion only of the car-body and one truck at that end wherethe dumping mechanism is located; and Fig. 3 is a top plan view ofthesame, partly in section.

The body of the car is denoted by 1. It is supported in a hoop or cradle2, the latter being provided with trunnions located diametricallyopposite and quite similar in structure, one only being shown in thepresent instance and denoted by 3, it being understood that there is atrunnion similar to the trunnion 3 at the opposite side of the hoop orcradle 2. The trunnion 3 is provided with a bearing-wheel 4, fixedthereon or formed integral therewith, which rests and travels on a track5, extending transversely of the car, and also with a spur-wheel 6,which intermeshes with a rack 7', extending transversely of the car andpreferably in proximity to the track 5. It is to 'be understood that thetrunnion at the opposite end of the hoop or cradle 2 is in like mannerprovided with a bearing-wheel similar to the Wheel 4, resting on a tracksimilar to the track 5, and with a spur-wheel fixed thereon similar tothe spur-Wheel 6 and intermeshing with a rack-bar 7 The truck forsupporting the track 5 and .rack-bar, is denoted as a whole by 9 andneeds no specific description, as it may be of any well-known orapproved form suitable for the purpose, it being understood that atrucksimilar to the truck 9 is utilized at the opposite end of the car with abolster similar to the bolster 8 for supporting the track and rackbar atthat end of the car, the two bolsters being connected by a reach-bar 10,which is curved downwardly between the trucks, as clearly shown in Fig.2, to permit the body 1 of the car to tilt laterally and at the sametime keep its center of gravity low.

Up to the present point the features which have been referred to arethose which are well known in the art, the subject-matter of mypresentinvention consisting, broadly, in a cylinder mounted toreciprocate transversely across the car and by its connection with thetrunnion of the body'of the car forcing the car-body into a tilted ordumping position and back again into an upright position.

My invention further consists in means for connecting the reciprocatingcylinder with the car-body in such a manner that it may tilt the bodyinto dumping position in either of two opposite directions at pleasureand in-means for arresting and controlling the dumping movementof thecar-body in such a manner as to prevent shocks and in means for lockingand releasing the reciprocating cylinder, and hence the car-bodyconnected thereto.

On the bolster 8 there is fixed a pair of brackets (denoted by 11 12) inwhich a transverselyextending guide-bar or piston-rod 13 is fixed, thesaid guide-bar or piston-rod forming a support for the cylinder 14:,which serves as a motor and which is intended to travel back and forthon the bar 13 a distance suflicient to throw the car-body into a tilteddumping position, as shown in'dottedlines, Fig. 1.

The cylinder or motor 14 is held in its position against a rotarydisplacement on the bar 13 by means of an auxiliary bar 15, ex-

tending transversely between the brackets 11 and 12 parallel with thebar 13 and engaged with an easy-sliding fit by lugs 16 17, dependingfrom and fixed to the cylinder 14. The cylinder 14 is provided on itsside toward the rack 7 (see Fig. 3) with a hollow casing 18, extendingsubstantially the length of the cylinder and of suflicient interiordiameter to receive Within it an extension 19 of the trunnion 3,surrounded by a bearing box or skein 20. The connection between thecylinder and the trunnion is made by means of this hollow casing 18, andthe trunnion is locked in position at the one or the other of theopposite ends of the casing 18 by by means of a removable key 21, whichextends vertically through the walls of the casing 18. This provides forshifting the operating-cylinder 14 with respect to the trunnion, so thatthe movement of the cylinder will rotate the trunnion in either of twoopposite directions, depending upon the end of the hollow casing 18 inwhich the trunnion is located at the moment the cylinder is started inmotion.

The piston (denoted by 22) is fixed on the rod 13 and remains stationarywhile the cylinder 14 is forced by the motive fluid back and forth onthe rod or bar 13. 7

Flexible pipes 23 24 lead from the opposite ends of the cylinder 14 to avalve-box 25, in which the valve 26 is located, the said valvebox beingprovided with an exhaust-pipe 27 and an inlet-pipe 28.

To modify any possible shock which might take place as the body of thecar reaches its dumping position, I provide bufiers 29 30, the one, 29,located in the bearing-wheel 4 in position to arrest the movement of thetrunnion at the limit of the dumping movement to the left and the other,30, beinglocated on the bearingwheel 4 in position to arrest themovement of the trunnion at the limit of the dumping movement to theright. To relieve any possible shock at the limit of the return movementof the car-bod y into its upright or receiving position, I provide aremovable bulfer 31, which may be removed from its position shown inFig. 3 to receive the return movement of the left dump into acorresponding position on the track 5 (indicated by the perforations 32)to receive the return movement of the righthand dump.

To lock the cylinder 14, and hence the carbody at the limits of itsupright or dumping movements, and to provide for releasing it from thesepositions to permit the cylinder to tilt it into the one or the other ofsaid positions, Iprovide spring-actuated locking-dogs (denoted,respectively, by 33 34) mounted in brackets 35 36, extending upwardlyfrom the bases of the brackets 11 and 12, respectively. These dogs havefixed to rock therewith upwardly-extending arms 37 38, their free endsbeing connected with operating-rods 39 40, having a sliding movement inthe brackets 5 11 and 12, respectively, and provided with springs 41 42,the tension of which tend to hold the dogs 33 and 34 at all times intheir locking positions. These rods 39 are conveniently provided withhandles 43 44 for operating them against the tension of their springs tothrow the dog 33 or 34 out of its engagement with the depending lug 16or 17, as the case may be, to permit the cylinder 14 to move to theright or to the left under the pressure of its motive fluid.

The operation of the car is as follows: Assuming that it be desired todump the car to the left, as shown in dotted lines, Fig. 1, the valve 26is first turned to admit the motive fluidsteam, for example-into thecylinder 14 to the right of the piston 22 in order to form a fluidcushion to prevent the too sudden movement of the cylinder in theopposite direction when steam is applied in that direction. The valve 26is then turned to admit the motive fluid into the cylinder to the leftof the piston 22, and this pressure will tend to slide the cylinder l4and carry with it the trunnion which supports the body of the carwhenever the rod is pushed in adirection to release the dog 34. Thismovement of the cylinder because of the engagement of the spur-wheel 6with the rack 7 will cause the car to tilt, and when the cylinder hasreached the limit of its movement in this direction the car will be inits tilted position, as shown. During this tilted movement the cylinderwill be compressing the fluid which was first admitted to the right ofits piston, which fluid will be slowly exhausted through theexhaust-port 27 and the move ment of the cylinder thereby renderedsteady and easy. When it is desired to return the car-body to itsupright position, the fluid is admitted to the cylinder to the right ofthe piston 22, which will force the cylinder 14 back into the positionshown in Figs. 1 and 2, carrying the car-body 1 into its uprightposition whenever the dog 33 is released by pushing the rod 39. When itis desired to dump the car to the right, the key 21 is removed and thefluid admitted to the left of the piston 22, which will slide thecylinder over to the left without carrying the trunnion along with it,and when it has reached the limit of its movement the key 21 may beinserted into the opening 45 to lock the trunnion to that end of thecylinder, and the operation hereinabove described may be repeated exceptin reverse order to dump the car to the right and return it to itsupright position.

What I claim is 1. The combination with a car-body supported to tilt andtravel laterally, of a cylinder arranged to travel laterally back andforth and connected with the car-body for imparting to the car-body itslaterally-traveling movement, means for actuating the cylinder and meansfor tilting the car-body during its traveling movement.

2. A car-body mounted to tilt and travel ally-traveling movement, meansfor tilting the car during its traveling movement and means forconnecting the car with the motor in different relative positionswhereby the said motor may force the car into dumping position in eachof .tWo opposite directions.

3. The combination with a car-body and its supporting-frame providedwith racks for tilt ing the car-body as it travels transversely alongits support, of amotor mounted to move transversely on thesupporting-frame, the said motor being connected with the car-body tocause it to travel together with .the motor transversely along thesupport and a valve for regulating the supply of the motive fluid to themotor.

&. The combination with a car-body and its supporting-frame providedwith a rack for causing the car-body to tilt as it travels along theframe, of a spur gear-wheel carried by the car-body and engaging thesaid rack, a cylinder mounted on the frame to travel back and forth, abearing engaged with the cylinder and with the car-body and a key forholding the said bearing in its position in engagement with the cylinderfor causing the car-body to travel with the cylinder.

5. The combination with the car-body provided with a spur-wheel and itssupportingframe provided with a rack engaging the spurwheel, of a motorconsisting of a cylinder bodily movable back and forth, a fiXedpistonrod forming a support for the cylinder, a guide-rod for holdingthe cylinder against rotary displacement, a piston fixed to saidpiston-rod within the cylinder and means for connecting the cylinderwith the car-body whereby the motor is moved rapidly together with 4 thecylinder.

6. The combination with the car-body and its supportingframe, thecarbody being mounted to tilt and travel transversely on the frame, of amovable buffer fixed to'the track 43 on which the car-body travels forlimiting the tilting movement of the car-body in either of two oppositedirections and a motor for mov'' ing the car along its track, I

7 The combination with the car-body and 5 its supporting-frame, thecar-body being provided with trunnions on which it tilts and moveslaterally, of a bufier fixed to the trun-' nions for relieving the shockat the limit of the tilting movement of the car-body and a motor formoving the car-body laterally and thereby tilting it. 7

8. The combination with the car body and its supporting-frame, thecar-body being mounted on trunnions to travel laterally and b0- tilt, ofa bodily-reciprocating cylinder engaged with a trunnion for operatingthe car and a locking device for engaging the cylinder at the .limit ofits bodily-reciprocating movement to hold the parts in position.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 30th day of July,

KARL P. ASTROM.

